The Z326-15-A7 is a 7 mL tube adapter that drops into the 15 mL tube position on multiple Hermle 15 mL angle rotors — converting a 15 mL workflow position into a 7 mL position without rotor swap. Sold as a 2-pack. The Z326-15 prefix indicates the adapter is part of the Z326-family 15 mL adapter library, but the actual chassis compatibility is broader: the same adapter geometry serves the 15 mL position on Z207-A rotors, Z287-A rotors (Z287-0815, Z287-1215), and Z326 rotors (Z326-1050 10 × 50 mL angle rotor and others) per the Hermle adapter cross-reference.
Key Specifications
| SKU | Z326-15-A7 |
| Type | Tube adapter — 15 mL position → 7 mL tube |
| Pack quantity | 2 adapters per SKU |
| Tube format accepted | 1 × 7 mL tube (13.5 mm OD, 95–115 mm length) |
| Compatible 15 mL positions | Z207-A 15 mL rotors, Z287-A 15 mL rotors (Z287-0815, Z287-1215), Z326-1050 (10 × 50 mL angle with 15 mL via this adapter), and other Hermle 15 mL angle rotor positions |
| Compatible chassis | Multiple — Z207, Z287, Z326 family chassis, depending on the host rotor |
| Max. operating speed (with adapter + tube) | Per host rotor spec — varies by chassis pairing |
| List price | $181 (2-pack) |
Compatibility & When to Order This SKU
Cross-chassis adapter — order quantity matches host rotor. The 2-pack quantity is appropriate for paired symmetric loading of 2 positions or as a starter set; for full-rotor 7 mL workflow on 6-, 8-, 10-, or 12-position 15 mL host rotors, order multiple packs.
Order this SKU when:
- Adding 7 mL tube workflow capability to a 15 mL angle rotor on any compatible Hermle chassis.
- 7 mL clinical-research collection workflows when 7 mL Vacutainer-style or round-bottom tubes are the workflow's primary collection format.
- Mixed-format runs — when some positions need 15 mL tubes and others need 7 mL tubes within the same cycle (with adapter symmetry preserved across paired positions).
- Replacement adapters if a current set is damaged or worn.
Why This Adapter Matters
7 mL tube workflows — common in clinical and clinical-research workflows for adult phlebotomy where 7 mL is sufficient sample volume — sit between the smaller pediatric 5 mL format and the larger 10 mL adult-standard Vacutainer format. The Z326-15-A7 adapter lets a 15 mL angle rotor handle 7 mL tubes without the cost and inventory of a dedicated 7 mL rotor — useful when 7 mL workflows are routine but the lab's primary chassis is configured for 15 mL.
Application Profile
7 mL clinical phlebotomy workflows — 7 mL is a common adult clinical phlebotomy format (alongside 5 mL pediatric and 10 mL adult-standard); the Z326-15-A7 enables 7 mL processing on a 15 mL workhorse rotor.
Veterinary practices — 7 mL Vacutainer-style is common in veterinary blood collection; the adapter delivers veterinary blood-component separation on a 15 mL rotor configured chassis.
Clinical-research collection workflows — clinical-research protocols specifying 7 mL collection tubes can use the adapter on existing 15 mL chassis without instrument upgrade.
Mixed-volume aliquot prep — when a workflow batches both 15 mL primary samples and 7 mL aliquot tubes in the same cycle, the adapter handles the 7 mL tubes within the same rotor.
Educational and clinical-tech teaching workflows — teaching curricula using 7 mL tubes for clinical-blood-component teaching exercises on a 15 mL rotor chassis.
Cross-chassis core-facility consolidation — shared cores running mixed-chassis fleets can stock a single Z326-15-A7 adapter SKU that serves any 15 mL angle rotor across Z207, Z287, Z326 chassis families.
Ordering & Configuration
Symmetric adapter loading. Pair adapter positions across the rotor by tube mass.
Adapter seat verification. Confirm each adapter is fully seated in its 15 mL position before loading the 7 mL tube.
Tube cap confirmation. All Vacutainer rubber stoppers or screw caps must be fully seated before spinning at the host rotor's max RPM.
Z326-15-A7 ships as 2 adapters. 7 mL tubes are operator-supplied (commodity clinical and veterinary phlebotomy supplies).
Confirm at quote: host rotor (which 15 mL angle rotor will use the adapter), chassis pairing (Z207, Z287, Z326 family), tube format (7 mL Vacutainer-style or round-bottom), pack count needed for the host rotor's position count, and lead time.
Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the adapters.
Z326-15 adapter family — cross-chassis 15 mL position adapters:
- Z326-15-A7 (this product) — 1 × 7 mL tube
- Z326-15-A5 — 1 × 5 mL tube
- Z326-15-A20 — 1 × 1.5 / 2.0 mL microtube
Match the adapter to the workflow's smaller-tube format. All three adapters share the 15 mL position envelope and are cross-chassis compatible across Hermle 15 mL angle rotors.
